No idea why this thing is called the Yellow Boxfish! But these bright yellow, polka-dotted, boxy balloon-shaped fish are found in tropical and temperate marine waters of the Indo-West Pacific.---maybe because it's yellow and box like?

Genetically engineered angelfish (Pterophyllum) glow in a tank at the 2012 Taiwan international aquarium expo. The fish are the world's first pink fluorescent angelfish and can view without black light.